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K thermocouple

Type K thermocouples are among the most commonly used sensors for temperature measurement in industrial, scientific, and automation applications. Their versatility, accuracy, and durability make them a reliable option for demanding environments.

Within the wide range of Type K temperature probes, this model stands out for its ability to operate at extreme temperatures and its high thermal sensitivity. At Conatec, we offer specialised solutions to help you find the ideal Type K thermocouple sensor for your process.

 

Sensor element
  • PT100 (-70 a 450ºC)
  • PT1000 (-70 a 450ºC)
  • T (-200 a 350 °C)
  • J (-40 a 800 °C)
  • E (-150 a 1000 °C)
  • K (-150 a 1200 °C)
  • N (-150 a 1100 °C)
  • S (0 a 1600 °C)
  • R (0 a 1600 °C)
  • B (0 a 1800 °C)
Material
  • Metallic
  • Stainless steel
  • Refractory Steel
  • High hardness
  • Teflon coating
  • Ceramics
  • Ceramics,Ker 530
  • Ceramics,Ker 610
  • Ceramics,Ker 710
  • Pythagoras Ker 610
  • Alsint Ker 710
  • Silimantin Ker 530
  • Sialon
  • Silicon Carbide
  • Inconel
  • Incoloy
  • Aisi-316
  • Aisi-446
  • Silicon Nitride
  • Coated polyolefin
  • Other
Construction type
  • Casing
  • Direct cable output
  • Headed
  • Pyrometric cane
  • Bayonet
  • Screw
  • Slot
  • Magnetic
  • Clamp
  • Washer
  • Crushed tip
  • Other

Categories

Sensor element
  • PT100 (-70 a 450ºC)
  • PT1000 (-70 a 450ºC)
  • T (-200 a 350 °C)
  • J (-40 a 800 °C)
  • E (-150 a 1000 °C)
  • K (-150 a 1200 °C)
  • N (-150 a 1100 °C)
  • S (0 a 1600 °C)
  • R (0 a 1600 °C)
  • B (0 a 1800 °C)
Material
  • Metallic
  • Stainless steel
  • Refractory Steel
  • High hardness
  • Teflon coating
  • Ceramics
  • Ceramics,Ker 530
  • Ceramics,Ker 610
  • Ceramics,Ker 710
  • Pythagoras Ker 610
  • Alsint Ker 710
  • Silimantin Ker 530
  • Sialon
  • Silicon Carbide
  • Inconel
  • Incoloy
  • Aisi-316
  • Aisi-446
  • Silicon Nitride
  • Coated polyolefin
  • Other
Construction type
  • Casing
  • Direct cable output
  • Headed
  • Pyrometric cane
  • Bayonet
  • Screw
  • Slot
  • Magnetic
  • Clamp
  • Washer
  • Crushed tip
  • Other
K thermocouple

Thermocouple with metal protection

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K thermocouple

High hardness thermocouple

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K thermocouple

Cable output thermocouple

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K thermocouple

Sheathed thermocouple with head

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K thermocouple

Sheathed thermocouple with pot seal and cable

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K thermocouple

Sheathed thermocouple with pin plug

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K thermocouple

Magnetic thermocouple

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K thermocouple

Adjustable ring thermocouple

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K thermocouple

Washer-type thermocouple

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K thermocouple

Thermocouple with flattened and perforated tip

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What is a K thermocouple?

A K-type thermocouple is a temperature sensor composed of a chromel (nickel-chromium) and alumel (nickel-aluminium) alloy, allowing it to measure temperatures over a wide range and provide a fast response.

The K-type thermocouple is highly resistant to oxidation, making it ideal for applications in inert and slightly oxidising atmospheres. Thanks to its durability and affordability, the K-type thermocouple is a widely used option in industries such as manufacturing, metallurgy and the energy sector.

 

How does a type K thermocouple probe work?

The operation of a type K thermocouple probe is based on the generation of an electrical signal proportional to the temperature difference between its ends. When the junction of the two metals detects a thermal change, a voltage is produced that can be interpreted to accurately measure the temperature.

This operating principle, combined with the high sensitivity of the K-type thermocouple, allows for fast and reliable readings in a wide variety of applications. For best performance, it is essential to use a suitable K-type thermocouple cable, as its quality directly influences signal stability.

 

Measuring range of a K-type probe

The measurement range of a type K probe is one of the widest among temperature sensors, ranging from -200°C to 1,250°C, depending on the type of coating and sensor protection.

This wide measurement range makes the K-type thermocouple an ideal choice for high-temperature industrial environments, as well as for applications in furnaces, turbines, and heating systems. If you need to know the exact values based on temperature, you can consult the K-type thermocouple table.

 

How to choose the right K-type thermocouple sensor?

To choose the right type K thermocouple sensor, it is essential to consider several factors.

The temperature range determines the most suitable type K temperature probe, ensuring stability in different environments. The type of insulation influences the sensor's resistance to adverse conditions such as humidity or corrosion.

Finally, choosing the right K-type thermocouple cable ensures a stable signal and reduces interference, optimising measurement accuracy.